The FDA sent a warning letter to USPlabs last month telling the company they must stop distributing OxyElite Pro and another dietary supplement, VERSA-1.The supplements contain the ingredient aegeline. The FDA says the ingredient "lacks history of use or other evidence of safety."

The FDA advises consumers not to use any dietary supplements labeled OxyElite Pro or VERSA-1 and to contact their doctor if they believe they've been harmed by using one of the above products.

Health care providers can submit a report by calling the FDA's MedWatch hotline at 1-800-FDA-1088 or by reporting it online if they believe their patient has had a serious harmful effect or illness from a dietary supplement.